"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 防篡改
Case Name   : 修改口令时的防暴力破解
Create At   : 2022/3/14
Owner       : @daiguatutu
Description :
    1.设置参数并重启数据库enableseparationofduty=on
    2.创建新用户
    3.设置账号锁定次数failed_login_attempts=1
    4.新用户登录不加旧密码修改自身密码
    5.新用户登录使用正确的旧密码修改自身密码
    6.新用户登录将旧密码设置错误,暴力修改密码（第1次）
    7.新用户登录将旧密码设置错误,暴力修改密码（第2次）
    8.清理环境
Expect      :
    1.成功
    2.成功
    3.成功
    4.失败,The old password can not be NULL,
    please input your old password with 'replace' grammar
    5.成功
    6.失败,The old password is invalid
    7.失败,The account has been locked
    8.清理环境成功
History     :
"""

import os
import unittest

from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node
from yat.test import macro


class Security(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.common = Common()
        self.u_name = 'u_security_authen_account_0004'
        self.u_name = 'u_security_authen_account_0004_01'
        self.default_value1 = self.common.show_param('enableSeparationOfDuty')
        self.default_value2 = self.common.show_param('failed_login_attempts')

    def test_security(self):
        text = '-----step1：设置参数并重启数据库enableSeparationOfDuty=on; ' \
               'expect:成功-----'
        self.log.info(text)
        mod_msg = self.pri_sh.execute_gsguc('set',
                                            self.constant.GSGUC_SUCCESS_MSG,
                                            'enableSeparationOfDuty=on')
        self.assertTrue(mod_msg, '执行失败:' + text)
        result = self.pri_sh.restart_db_cluster()
        self.assertTrue(result, '执行失败' + text)

        text = '-----step2：创建普通用户 expect:成功-----'
        self.log.info(text)
        create_cmd = f"drop user if exists {self.u_name} cascade; " \
            f"create user {self.u_name} identified by " \
            f"'{macro.COMMON_PASSWD}';"
        msg = self.pri_sh.execut_db_sql(create_cmd)
        self.log.info(msg)
        self.assertIn(self.constant.DROP_ROLE_SUCCESS_MSG, msg,
                      '执行失败:' + text)
        self.assertIn(self.constant.CREATE_ROLE_SUCCESS_MSG, msg,
                      '执行失败:' + text)

        text = '-----step3：设置账号锁定次数failed_login_attempts=1; ' \
               'expect:成功-----'
        self.log.info(text)
        mod_msg = self.pri_sh.execute_gsguc('reload',
                                            self.constant.GSGUC_SUCCESS_MSG,
                                            'failed_login_attempts=1')
        self.assertTrue(mod_msg, '执行失败:' + text)

        text = f'-----step4：新用户登录不加旧密码修改自身密码; expect:失败-----'
        self.log.info(text)
        sql = f"alter user {self.u_name} identified by " \
            f"'123{macro.COMMON_PASSWD}';"
        connect = f'-U {self.u_name} -W {macro.COMMON_PASSWD}'
        msg = self.pri_sh.execut_db_sql(sql, sql_type=connect)
        self.log.info(msg)
        self.assertIn("The old password can not be NULL, please input your "
                      "old password with 'replace' grammar",
                      msg, '执行失败:' + text)

        text = f'-----step5：新用户登录使用正确的旧密码修改自身密码; expect:成功-----'
        self.log.info(text)
        sql = f"alter user {self.u_name} identified by " \
            f"'123{macro.COMMON_PASSWD}' REPLACE '{macro.COMMON_PASSWD}';"
        msg = self.pri_sh.execut_db_sql(sql, sql_type=connect)
        self.log.info(msg)
        self.assertIn(self.constant.ALTER_ROLE_SUCCESS_MSG,
                      msg, '执行失败:' + text)

        text = f'-----step6：新用户登录将旧密码设置错误,暴力修改密码（第1次）; expect:失败-----'
        self.log.info(text)
        sql = f"ALTER USER {self.u_name} IDENTIFIED BY " \
            f"'456{macro.COMMON_PASSWD}' REPLACE '789{macro.COMMON_PASSWD}';"
        connect = f'-U {self.u_name} -W 123{macro.COMMON_PASSWD}'
        msg = self.pri_sh.execut_db_sql(sql, sql_type=connect, )
        self.log.info(msg)
        self.assertIn('The old password is invalid', msg, '执行失败:' + text)

        text = f'-----step7：新用户登录将旧密码设置错误,暴力修改密码（第2次）; expect:失败,账户被锁-----'
        self.log.info(text)
        sql = f"ALTER USER {self.u_name} IDENTIFIED BY " \
            f"'456{macro.COMMON_PASSWD}' REPLACE '789{macro.COMMON_PASSWD}';"
        msg = self.pri_sh.execut_db_sql(sql, sql_type=connect, )
        self.log.info(msg)
        self.assertIn(self.constant.ACCOUNT_LOCKED_TYPE, msg, '执行失败:' + text)

    def tearDown(self):
        self.log.info('-----step8：清理环境-----')
        text1 = '-----删除用户 expect:成功-----'
        self.log.info(text1)
        drop_cmd = f"drop user if exists {self.u_name} cascade;"
        drop_msg = self.pri_sh.execut_db_sql(drop_cmd)
        self.log.info(drop_msg)

        text2 = '-----修改参数enableSeparationOfDuty,failed_login_attempts为初始值 ' \
                'expect:成功-----'
        self.log.info(text2)
        mod_msg1 = self.pri_sh.execute_gsguc('set',
                                             self.constant.GSGUC_SUCCESS_MSG,
                                             f'enableSeparationOfDuty='
                                             f'{self.default_value1}')
        restart_res = self.pri_sh.restart_db_cluster()
        mod_msg2 = self.pri_sh.execute_gsguc('reload',
                                             self.constant.GSGUC_SUCCESS_MSG,
                                             f'failed_login_attempts='
                                             f'{self.default_value2}')

        self.log.info('-----断言tearDown执行成功-----')
        self.assertIn(self.constant.DROP_ROLE_SUCCESS_MSG, drop_msg,
                      '执行失败:' + text1)
        self.assertTrue(mod_msg1, '执行失败:' + text2)
        self.assertTrue(restart_res, '执行失败:' + text2)
        self.assertTrue(mod_msg2, '执行失败:' + text2)
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
